Mcamanus, I don't live in the Tulsa area but OKC. Yours is the only posting I've seen for this state. There is a demonstration of different audio components going on in Tulsa at the end of April. I'm going to try to go. Should be an interesting experience. A frequent poster here, Duke Lejeune will be there with some equipment from his store. More information is in the Miscellaneous forum under GPA(Great Plains Audio)
